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Patented June 9, 1885.

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UNiTa Starts CARL WINKEL, on WILLIAMSBURG, ASSIGNOR or ONE-HALF LUDWIG, on NEW YORK, N. Y.

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TO LEVI A.

SPECIFICATION forming part of Letters Patent No. 319,770, dated June 9, 1885.

Application filed March 12, 1885. (No model.)

To all whom/it may concern:

Be it known that I, CARL WINKEL, a citizen of the United States, residing in Williamsburg, in the county of Kings and State of New York, have invented certain new and useful Improvements in Type-Wheel Attachments for Printing-Telegraphs, of which the following is a specification.v

The invention relates to the class of devices employed in printing telegraph instruments for preventing the paper tape from being thrust against the inactive type-wheel of a two-wheel instrument when it is desired to effect an impression from the other. It has been customary to employ for this purpose a thin blade, which extends between the two wheels, and by projecting slightly beyond the peripheries of the same is designed to prevent the paper from being brought into contact with both type-wheels when it is impelled toward one by the printing-platen. It has been found difficult, however, in certain forms of instruments to prevent the paper from touching the resting type-wheel, thus causing an indistinct impression or a blur.

My invention consists in employing,in connection with a blade which is itself of a somewhat novel construction, two arms or pins which extend in directions approximately tangential to the peripheries of the respective type-wheels and lie in the planes thereof. The blade is located midway between the two wheels and the edge which is presented toward the printing-platen is curved inward slightly. The blade does not project beyond the peripheries of the type-wheels at the point opposite the platen, but at either side of the same it does. The pins project nearly to the points where the platen strikes the wheel, but are sufficiently distant therefrom to permit the operation of the platen to be unimpeded.

In the accompanying drawings, Figure 1 is a side elevation; Fig. 2, an end view of the device as applied to two type-wheels; and Fig. 3 is a face view of the device detached.

Referring to the figures, A and A represent two type -wheels of a printing-telegraph instrument, and B represents a printing-platen, which may be moved into the plane of one or the other wheel for the purpose of effecting impressions therefrom. Between the wheels .any suitable material. ably cut away or curved inward slightly, as

there extends a thin blade, 0, which may be of metalsuch, for instance, as brass-or of This blade is prefershown at 0, so that at the point opposite the platen it does not project beyond the typewheel peripheries. The end of the blade, however, projects outward, as shown at c, beyond the type-wheels, and a projection, 0 at the opposite side of the platen extends out be yond the peripheries. With this device alone, however, it is impossible to effect an impression from one type-wheel without causing the tape to rub against the other wheel. Two pins, D and D", are therefore provided in addition. These pins extend from the support E of the blade 0. They are preferably located in the planes of the respective type-wheels, and extend beyond the projection 0 They are preferably beveled at their ends, as shown at d, so that as the paper is thrust against one type-wheel or the other it will follow the be'veled surface. The end 6 and projection c of the blade and the end of the pin D or D all combine to prevent the paper from striking one wheel, while they permit it to be readily forced against the other. The pins and blade also serve to prevent the character next to that from which an impression is being effected from touching the paper. This is an important advantage, for it sometimes happens, when the guard is not employed, that while a full impression is made of any given character a portion of the next character upon the wheel will be-printed. The support E is constructed with a long slot or opening, through which a screw, 6, extends. This permits the support to be adjustably attached to the support F of the type-wheels or to any suitable portion of the instrument. If it is desired, suitable pressure-screws, d and d may be employed for pressing the pins inward for the purpose of adjusting their positions with reference to the peripheries of the respective type wheels. Usually, however, it is preferred either to solder the pins securely to the support or to screw them into suitable openings formed to receive them.

I claim as my invention 1. The combination, substantially as hereinbefore set forth, with two type-wheels of a printing-telegraph instrument, of a blade or guard extending between the same, and two pins extending in the planes of said typewheels toward the'points at which impressions are effected.

2. The combination, substantially as hereinbefore set forth, of two type-wheels, means for effecting impressions from either at will, the blade 0 and the pins D and D together constituting a paper-guard for the typewheels.

3. The combination, substantially as hereinbefore set forth, with the bladeO, haying the curved portion a and projection c", of the pins D and D having their ends beveled.

4. The combination, substantially as hereinbefore set forth, of the two 'type wheels, a blade or guard extending between the same, two pins or arms in or nearly in the planes of the type-wheels, a support for the same, and means for adj ustably attaching the support to the frame of the instrument.

CARL WINKEL.

Witnesses:

DANL. W. EDGEOOMB, OHARLEs A. TERRY. 

